$273+ Cheap flights from Seattle (SEA) to Helsinki (HEL)
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 8/31. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — HEL
Jul 18 — Jul 251
Round-trip
1 adult, Economy
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Find cheap flights from Seattle to Helsinki with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheapflights Tip: The best prices from Seattle/Tacoma Intl to Helsinki-Vantaa are usually found in January or October, booked 73 days in advance, depart on a Wednesday or Friday and return on a Monday
Cheap flight deals from Seattle to Helsinki
Cheapest
Best
Last-minute
One-way
Cheapest flights from Seattle to HelsinkiExplore the most affordable flight options available from Seattle to Helsinki. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 18, 2026.
Explore the most affordable flight options available from Seattle to Helsinki. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 18, 2026.
This Trip.com deal was found by Cheapflights users on 6/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/93:40 pm
SEA
- HEL
2 stops16h 40m
Multiple Airlines
Mon 10/127:05 am
HEL
- SEA
2 stops20h 50m
Multiple Airlines
Deal found 6/17![Multiple Airlines logo]()
$587
This Mytrip deal was found by Cheapflights users on 6/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/243:40 pm
SEA
- HEL
2 stops15h 00m
Multiple Airlines
Mon 8/313:40 pm
HEL
- SEA
2 stops15h 00m
Multiple Airlines
Deal found 6/16![Multiple Airlines logo]()
$626
This Mytrip deal was found by Cheapflights users on 6/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/98:00 am
SEA
- HEL
3 stops30h 40m
Multiple Airlines
Mon 8/243:45 pm
HEL
- SEA
3 stops35h 14m
Multiple Airlines
Deal found 6/17![Multiple Airlines logo]()
$674
This FlightHub deal was found by Cheapflights users on 6/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/273:55 pm
SEA
- HEL
1 stop23h 35m
Scandinavian Airlines
Mon 10/54:00 pm
HEL
- SEA
1 stop31h 45m
Scandinavian Airlines
Deal found 6/14![Scandinavian Airlines logo]()
$703
This Scandinavian Airlines deal was found by Cheapflights users on 6/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/293:55 pm
SEA
- HEL
1 stop13h 25m
Scandinavian Airlines
Mon 10/54:00 pm
HEL
- SEA
1 stop31h 45m
Scandinavian Airlines
Deal found 6/14![Scandinavian Airlines logo]()
$726
This Scandinavian Airlines deal was found by Cheapflights users on 6/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/293:55 pm
SEA
- HEL
1 stop13h 25m
Scandinavian Airlines
Sun 10/47:35 pm
HEL
- SEA
2 stops52h 10m
Scandinavian Airlines
Deal found 6/14![Scandinavian Airlines logo]()
$733
This oojo deal was found by Cheapflights users on 6/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/263:55 pm
SEA
- HEL
1 stop13h 25m
Scandinavian Airlines
Tue 10/67:15 am
HEL
- SEA
2 stops16h 30m
Scandinavian Airlines
Deal found 6/14![Scandinavian Airlines logo]()
$742
Best flights from Seattle to HelsinkiDiscover carefully curated flight deals from Seattle to Helsinki that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated June 18, 2026.
Discover carefully curated flight deals from Seattle to Helsinki that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated June 18, 2026.
This Icelandair deal was found by Cheapflights users on 6/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/611:25 pm
SEA
- HEL
1 stop28h 35m
Icelandair
Tue 8/183:00 pm
HEL
- SEA
1 stop15h 40m
Icelandair
Deal found 6/16![Icelandair logo]()
$927
This Scandinavian Airlines deal was found by Cheapflights users on 6/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/123:55 pm
SEA
- HEL
2 stops31h 00m
Scandinavian Airlines
Sat 8/159:05 pm
HEL
- SEA
1 stop26h 40m
Scandinavian Airlines
Deal found 6/14![Scandinavian Airlines logo]()
$1,106
This United Airlines deal was found by Cheapflights users on 6/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/38:56 am
SEA
- HEL
2 stops29h 34m
United Airlines
Thu 8/206:35 am
HEL
- SEA
3 stops26h 51m
United Airlines
Deal found 6/14![United Airlines logo]()
$1,111
This Turkish Airlines deal was found by Cheapflights users on 6/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/112:35 pm
SEA
- HEL
1 stop20h 05m
Turkish Airlines
Tue 8/118:20 am
HEL
- SEA
1 stop19h 00m
Turkish Airlines
Deal found 6/14![Turkish Airlines logo]()
$1,123
This Icelandair deal was found by Cheapflights users on 6/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/1011:25 pm
SEA
- HEL
1 stop20h 45m
Icelandair
Thu 7/163:00 pm
HEL
- SEA
1 stop15h 40m
Icelandair
Deal found 6/17![Icelandair logo]()
$964
This Icelandair deal was found by Cheapflights users on 6/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/43:40 pm
SEA
- HEL
2 stops18h 05m
Icelandair
Tue 9/1511:40 am
HEL
- SEA
2 stops19h 00m
Icelandair
Deal found 6/14![Icelandair logo]()
$1,000
This Icelandair deal was found by Cheapflights users on 6/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/127:00 pm
SEA
- HEL
1 stop17h 30m
Icelandair
Mon 8/1011:40 am
HEL
- SEA
2 stops34h 05m
Icelandair
Deal found 6/14![Icelandair logo]()
$1,033
This Icelandair deal was found by Cheapflights users on 6/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/97:00 pm
SEA
- HEL
1 stop33h 00m
Icelandair
Sun 7/193:00 pm
HEL
- SEA
1 stop30h 45m
Icelandair
Deal found 6/17![Icelandair logo]()
$1,044
This Icelandair deal was found by Cheapflights users on 6/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/67:00 pm
SEA
- HEL
1 stop33h 00m
Icelandair
Thu 7/163:00 pm
HEL
- SEA
1 stop15h 40m
Icelandair
Deal found 6/17![Icelandair logo]()
$1,068
This Icelandair deal was found by Cheapflights users on 6/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/217:00 pm
SEA
- HEL
2 stops14h 40m
Icelandair
Mon 8/3111:40 am
HEL
- SEA
2 stops16h 15m
Icelandair
Deal found 6/16![Icelandair logo]()
$1,079
This Icelandair deal was found by Cheapflights users on 6/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/711:25 pm
SEA
- HEL
2 stops24h 50m
Icelandair
Sun 7/193:00 pm
HEL
- SEA
1 stop30h 45m
Icelandair
Deal found 6/17![Icelandair logo]()
$1,081
This Icelandair deal was found by Cheapflights users on 6/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/227:00 pm
SEA
- HEL
2 stops37h 40m
Icelandair
Sun 8/23:00 pm
HEL
- SEA
1 stop30h 45m
Icelandair
Deal found 6/16![Icelandair logo]()
$1,124
Last-minute flights from Seattle to HelsinkiDiscover last-minute flight deals from Seattle to Helsinki. Data last updated June 18, 2026 and is based on user searches.
Discover last-minute flight deals from Seattle to Helsinki. Data last updated June 18, 2026 and is based on user searches.
This oojo deal was found by Cheapflights users on 6/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/2211:25 pm
SEA
- HEL
1 stop28h 35m
Icelandair
Tue 7/73:00 pm
HEL
- SEA
1 stop30h 45m
Icelandair
Deal found 6/13![Icelandair logo]()
$859
This Icelandair deal was found by Cheapflights users on 6/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/1011:25 pm
SEA
- HEL
1 stop20h 45m
Icelandair
Mon 8/1011:30 pm
HEL
- SEA
1 stop22h 15m
Icelandair
Deal found 6/14![Icelandair logo]()
$889
This Icelandair deal was found by Cheapflights users on 6/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/1011:25 pm
SEA
- HEL
1 stop20h 45m
Icelandair
Sun 7/193:00 pm
HEL
- SEA
1 stop30h 45m
Icelandair
Deal found 6/17![Icelandair logo]()
$891
This Gotogate deal was found by Cheapflights users on 6/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/133:40 pm
SEA
- HEL
1 stop12h 20m
Icelandair
Mon 7/2011:30 pm
HEL
- SEA
1 stop31h 10m
Icelandair
Deal found 6/17![Icelandair logo]()
$856
This Mytrip deal was found by Cheapflights users on 6/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/147:00 pm
SEA
- HEL
3 stops27h 20m
Multiple Airlines
Tue 7/215:30 am
HEL
- SEA
3 stops25h 10m
Multiple Airlines
Deal found 6/14![Multiple Airlines logo]()
$913
This Cheapflightsfares deal was found by Cheapflights users on 6/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/173:40 pm
SEA
- HEL
1 stop12h 20m
Icelandair
Mon 8/311:30 pm
HEL
- SEA
1 stop22h 15m
Icelandair
Deal found 6/17![Icelandair logo]()
$886
This Cheapflightsfares deal was found by Cheapflights users on 6/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/197:00 pm
SEA
- HEL
1 stop17h 30m
Icelandair
Mon 8/311:30 pm
HEL
- SEA
1 stop22h 15m
Icelandair
Deal found 6/17![Icelandair logo]()
$845
This Gotogate deal was found by Cheapflights users on 6/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/2411:25 pm
SEA
- HEL
1 stop13h 05m
Icelandair
Sat 8/811:30 pm
HEL
- SEA
1 stop22h 15m
Icelandair
Deal found 6/15![Icelandair logo]()
$853
This oojo deal was found by Cheapflights users on 6/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/273:40 pm
SEA
- HEL
2 stops18h 05m
Icelandair
Mon 8/1011:30 pm
HEL
- SEA
1 stop22h 15m
Icelandair
Deal found 6/16![Icelandair logo]()
$908
One-way flights from Seattle to HelsinkiSearch for one-way flight options from Seattle to Helsinki. Find affordable one-way fares based on user searches. Data last updated June 18, 2026.
Search for one-way flight options from Seattle to Helsinki. Find affordable one-way fares based on user searches. Data last updated June 18, 2026.
This Trip.com deal was found by Cheapflights users on 6/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/313:40 pm
SEA
- HEL
2 stops19h 40m
Multiple Airlines
Deal found 6/16![Multiple Airlines logo]()
$273
This Kiwi.com deal was found by Cheapflights users on 6/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/173:40 pm
SEA
- HEL
2 stops15h 00m
Multiple Airlines
Deal found 6/14![Multiple Airlines logo]()
$275
This Kiwi.com deal was found by Cheapflights users on 6/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/167:00 pm
SEA
- HEL
2 stops35h 40m
Multiple Airlines
Deal found 6/16![Multiple Airlines logo]()
$281
This Kiwi.com deal was found by Cheapflights users on 6/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/1511:25 pm
SEA
- HEL
3 stops38h 40m
Multiple Airlines
Deal found 6/16![Multiple Airlines logo]()
$326
This Kiwi.com deal was found by Cheapflights users on 6/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/311:25 pm
SEA
- HEL
3 stops29h 35m
Multiple Airlines
Deal found 6/15![Multiple Airlines logo]()
$338
This Mytrip deal was found by Cheapflights users on 6/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/193:40 pm
SEA
- HEL
3 stops30h 40m
Multiple Airlines
Deal found 6/15![Multiple Airlines logo]()
$347
This Kiwi.com deal was found by Cheapflights users on 6/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/511:25 pm
SEA
- HEL
2 stops34h 20m
Multiple Airlines
Deal found 6/15![Multiple Airlines logo]()
$359
Find flight deals from Seattle to Helsinki
Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to Helsinki (HEL). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated June 18, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $626 (Mytrip) |
One-way from | $273 (Trip.com) |
Popular in | June |
Cheapest in | January |
Average price | $1,178 |
Good round-trip deal | $972 or less |
Good one-way deal | $454 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from Seattle to Helsinki that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated June 18, 2026.
Use the filters below to find and compare flights from Seattle to Helsinki that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
SeattleHelsinki
SEA - HEL
SEAHEL
Seattle/Tacoma Intl
Thu 8/6
11:25 pm-2:00 pm
1 stop28h 35m
Helsinki-Vantaa
Tue 8/18
3:00 pm-8:40 pm
1 stop15h 40m
$927
SeattleHelsinki
SEA - HEL
SEAHEL
Seattle/Tacoma Intl
Fri 7/10
11:25 pm-6:10 am
1 stop20h 45m
Helsinki-Vantaa
Thu 7/16
3:00 pm-8:40 pm
1 stop15h 40m
$964
SeattleHelsinki
SEA - HEL
SEAHEL
Seattle/Tacoma Intl
Fri 9/4
3:40 pm-7:45 pm
2 stops18h 05m
Helsinki-Vantaa
Tue 9/15
11:40 am-8:40 pm
2 stops19h 00m
$1,000
SeattleHelsinki
SEA - HEL
SEAHEL
Seattle/Tacoma Intl
Sun 7/12
7:00 pm-10:30 pm
1 stop17h 30m
Helsinki-Vantaa
Mon 8/10
11:40 am-11:45 am
2 stops34h 05m
$1,033
SeattleHelsinki
SEA - HEL
SEAHEL
Seattle/Tacoma Intl
Thu 7/9
7:00 pm-2:00 pm
1 stop33h 00m
Helsinki-Vantaa
Sun 7/19
3:00 pm-11:45 am
1 stop30h 45m
$1,044
SeattleHelsinki
SEA - HEL
SEAHEL
Seattle/Tacoma Intl
Mon 7/6
7:00 pm-2:00 pm
1 stop33h 00m
Helsinki-Vantaa
Thu 7/16
3:00 pm-8:40 pm
1 stop15h 40m
$1,068
Quickest round-trip
SeattleHelsinki
SEA - HEL
SEAHEL
Seattle/Tacoma Intl
Fri 8/21
7:00 pm-7:40 pm
2 stops14h 40m
Helsinki-Vantaa
Mon 8/31
11:40 am-5:55 pm
2 stops16h 15m
$1,079
SeattleHelsinki
SEA - HEL
SEAHEL
Seattle/Tacoma Intl
Tue 7/7
11:25 pm-10:15 am
2 stops24h 50m
Helsinki-Vantaa
Sun 7/19
3:00 pm-11:45 am
1 stop30h 45m
$1,081
SeattleHelsinki
SEA - HEL
SEAHEL
Seattle/Tacoma Intl
Sun 7/12
3:55 pm-8:55 am
2 stops31h 00m
Helsinki-Vantaa
Sat 8/15
9:05 pm-1:45 pm
1 stop26h 40m
$1,106
SeattleHelsinki
SEA - HEL
SEAHEL
Seattle/Tacoma Intl
Mon 8/3
8:56 am-12:30 am
2 stops29h 34m
Helsinki-Vantaa
Thu 8/20
6:35 am-11:26 pm
3 stops26h 51m
$1,111
Showing 1-10 of 18 resultsSorted by cheapest first
Compare providers for flights from Seattle to Helsinki
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Seattle to Helsinki in June.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*1 star | |
| Price Accuracy- | Trust Score*1 star |
- Most accurate provider: When it comes to deals on Seattle-Helsinki flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Seattle-Helsinki flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Seattle-Helsinki flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Seattle-Helsinki flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Seattle-Helsinki flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
Best time to book a flight from Seattle to Helsinki
Have a flexible travel schedule? Discover the best time to fly to Helsinki from Seattle with our price prediction graph.
SEA-HEL
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from Seattle to Helsinki
How far ahead should I book a flight from Seattle to Helsinki?
The best time to book flights from Seattle to Helsinki is 70 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.
What is the cheapest month to book a flight from Seattle to Helsinki?
Currently, January is the cheapest month in which you can book a flight from Seattle to Helsinki (average of $543). Flying from Seattle to Helsinki in June is currently the most expensive (average of $1,178). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
What is the cheapest time of day to fly from SEA to HEL?
Find hourly flight availability from Seattle to Helsinki. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated June 18, 2026.
When flying from Seattle to Helsinki, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.
Reviews of airlines servicing Helsinki
Get insights into the airlines that provide service to Helsinki. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Helsinki. Reviews last updated June 18, 2026.
Get a feel of what it's like to fly with Finnair,Scandinavian Airlines, andIcelandair from Seattle to Helsinki by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Crew
8.2
Entertainment
6.9
Overall
7.6
Comfort
7.4
Food
6.7
Boarding
7.7
Reviews
1 / 20
10.0
ExcellentJake,Jun 2026
RNO - SEA
Crew
8.2
Entertainment
6.9
Overall
7.6
Comfort
7.4
Food
6.7
Boarding
7.7
Reviews
1 / 20
10.0
ExcellentJake,Jun 2026
RNO - SEA
Crew
8.2
Entertainment
6.9
Overall
7.6
Comfort
7.4
Food
6.7
Boarding
7.7
Reviews
1 / 20
10.0
ExcellentJake,Jun 2026
RNO - SEA
Crew
8.2
Entertainment
6.9
Overall
7.6
Comfort
7.4
Food
6.7
Boarding
7.7
Reviews
1 / 20
10.0
ExcellentJake,Jun 2026
RNO - SEA
Crew
8.2
Entertainment
6.9
Overall
7.6
Comfort
7.4
Food
6.7
Boarding
7.7
Reviews
1 / 20
10.0
ExcellentJake,Jun 2026
RNO - SEA
Crew
8.2
Entertainment
6.9
Overall
7.6
Comfort
7.4
Food
6.7
Boarding
7.7
Reviews
1 / 20
10.0
ExcellentJake,Jun 2026
RNO - SEA
Related info for your journey
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Top 5 airlines flying from Seattle to Helsinki
Discover the top 5 airlines that operate flights from Seattle to Helsinki. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated June 18, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$323 | Average$548 | FlexibilityNo cancel fee | On-time77% | |
| Cheapest$517 | Average$865 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$725 | Average$1,148 | FlexibilityNo cancel fee | On-time70% | |
| Cheapest$786 | Average$1,176 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$852 | Average$1,246 | FlexibilityNo cancel fee | On-time76% |